High-temperature multiferroicity and strong magnetocrystalline anisotropy in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>3</mml:mn><mml:mi>d</mml:mi></mml:mrow></mml:math>-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mn>5</mml:mn><mml:mi>d</mml:mi></mml:mrow></mml:math>double perovskites

Ležaić, Marjana; Spaldin, Nicola A.

doi:10.1103/physrevb.83.024410

Cited by 53 publications

(29 citation statements)

References 42 publications

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“…T he search for multiferroic materials combining electric and magnetic behaviours in a single phase has attracted a lot of attention from the perspective of designing new devices [1][2][3][4][5][6][7] and deepening our knowledge of materials and electromagnetism. One particularly important current research direction aims at the discovery of materials that possess electrical polarization and are ferromagnetic at room temperature.…”

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confidence: 99%

“…One particularly important current research direction aims at the discovery of materials that possess electrical polarization and are ferromagnetic at room temperature. Strikingly, it appears that these two desired features rarely coexist 4,6,8,9 . For instance, Bi 2 MnReO 6 and Bi 2 NiReO 6 have been predicted to exhibit an electrical polarization at room temperature, but both the Re and Ni/Mn sublattices adopt an antiferromagnetic order, therefore yielding a 'ferrimagnetic' rather than ferromagnetic overall ordering near 300 K (ref.…”

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Near room-temperature multiferroic materials with tunable ferromagnetic and electrical properties

et al. 2014

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The quest for multiferroic materials with ferroelectric and ferromagnetic properties at room temperature continues to be fuelled by the promise of novel devices. Moreover, being able to tune the electrical polarization and the paramagnetic-to-ferromagnetic transition temperature constitutes another current research direction of fundamental and technological importance. Here we report on the first-principles-based prediction of a specific class of materialsnamely, R 2 NiMnO 6 /La 2 NiMnO 6 superlattices where R is a rare-earth ion-that exhibit an electrical polarization and strong ferromagnetic order near room temperature, and whose electrical and ferromagnetic properties can be tuned by means of chemical pressure and/or epitaxial strain. Analysis of the first-principles results naturally explains the origins of these highly desired features.

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Near room-temperature multiferroic materials with tunable ferromagnetic and electrical properties

et al. 2014

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“…In addition, they display room-temperature magnetocapacitance 1 and show potential for multiferroicity. [2][3][4][5][6][7] The multiferroic nature has been predicted theoretically through dielectric anomalies and polar behaviour in double perovskites. Firstprinciples density functional calculations have shown the existence of soft phonons which modify the superexchange interaction between Ni and Mn in La 2 NiMnO 6 .…”

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confidence: 99%

Magnetization-steps in Y2CoMnO6 double perovskite: The role of antisite disorder

Nair

Pradheesh

Xiao

et al. 2014

Journal of Applied Physics

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Articles you may be interested inEnhanced magnetism and ferroelectricity in epitaxial Pb(Zr0.52Ti0.48)O3/CoFe2O4/La0.7Sr0.3MnO3 multiferroic heterostructures grown using dual-laser ablation technique J. Appl. Phys. 115, 17D707 (2014) Antisite disorder is observed to have significant impact on the magnetic properties of the double perovskite Y 2 CoMnO 6 which has been recently identified as a multiferroic. A paramagneticferromagnetic phase transition occurs in this material at T c % 75 K. At 2 K, it displays a strong ferromagnetic hysteresis with a significant coercive field of H c % 15 kOe. Sharp steps are observed in the hysteresis curves recorded below 8 K. In the temperature range 2 K T 5 K, the hysteresis loops are anomalous as the virgin curve lies outside the main loop. The field-cooling conditions as well as the rate of field-sweep are found to influence the steps. Quantitative analysis of the neutron diffraction data shows that at room temperature, Y 2 CoMnO 6 consists of 62% of monoclinic P2 1 /n with nearly 70% antisite disorder and 38% Pnma. The bond valence sums indicate the presence of other valence states for Co and Mn which arise from disorder. We explain the origin of steps by using a model for pinning of magnetization at the antiphase boundaries created by antisite disorder. The steps in magnetization closely resemble the martensitic transformations found in intermetallics and display first-order characteristics as revealed in the Arrott's plots. V C 2014 AIP Publishing LLC.

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“…Hence, we find that suitable replacements for BMO in the considered SLs may dramatically increase the values of M (T room ). Examples of such replacement may be La 2 MnNiO 6 (T C = 275 K) [11,12], and Bi 2 NiReO 6 (T C = 360 K) [15].…”

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confidence: 99%

“…La 2 MnNiO 6 is paraelectric as well; nevertheless, a strategy to induce a small (improper) polarization in it, and thus obtain a near-room-temperature MEM, has recently been proposed [14]. Higher Curie temperatures have been predicted for perovskite oxides involving 5d transition metals (e.g., T C = 360 K for Bi 2 NiReO 6 ) [15], but such an increase is unfortunately accompanied by a deterioration of the insulating character; the increased spread of the d orbitals results in stronger magnetic couplings, but also closes the gap. Hence, the materials-design challenge remains open.…”

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confidence: 99%

Exploiting interfacial and size effects to construct oxide superlattices with robust and tunable magnetoelectric properties at room temperature

2015

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We propose a strategy to create materials displaying robust and tunable magnetoelectric multiferroic properties at room temperature. The key idea is to construct heterostructures that combine two different constituents: (1) Compound BiFeO3, which presents strong ferroelectric and antiferromagnetic orders well above room temperature, but displays a small magnetic moment. (2) A ferromagnetic insulator (e.g., BiMnO3) that is only required to couple magnetically with BiFeO3. Our simulations show that it is possible to combine such materials to create superlattices that present (i) a room-temperature multiferroic state with relatively large magnetization (up to 0.3 µB per transition metal atom, with the possibility to improve by finding a suitable replacement for BiMnO3), (ii) an amply customizable magnetic behavior, and (iii) a strong magnetoelectric coupling. Thus, the new design strategy successfully addresses the greatest challenge in the area of magnetoelectric multiferroics, exploiting interfacial couplings and size (layer-thickness) effects to produce materials apt for applications.

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High-temperature multiferroicity and strong magnetocrystalline anisotropy in3d-5ddouble perovskites

Cited by 53 publications

References 42 publications

Near room-temperature multiferroic materials with tunable ferromagnetic and electrical properties

Near room-temperature multiferroic materials with tunable ferromagnetic and electrical properties

Magnetization-steps in Y2CoMnO6 double perovskite: The role of antisite disorder

Exploiting interfacial and size effects to construct oxide superlattices with robust and tunable magnetoelectric properties at room temperature

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